Starting mechanism for explosion-motors.



E. PILLETTAZ.

STARTING MECHANISM PGR EXPLOSION MOTORS. APPLIOATION'HLED DB0.'12, 1913.

l, 1 1 3,424. Panted 001. 13, 1914.

4`sHEnTs-sHEnT 1.

E. FILLETTAZ.

STARTING MEGHANISM FOB. EXPLOSION MOTORS.

y i APPLICATION FILED DED. 12, 1913. l 1, 1 1 3,424, Patented 001;. 13, 1914.

4 SHEETS-SHEET Z.

. E. PILLETTAZ. STARTING MBGHANISM FOR EXPLOSION MOTORS.

APPLICATION FILED D110. 12, 1913.

Patented Oct. 13, 1914.

4 SHEETS-SHEET 3.

vE. PILLETTAZ.

STARTING MBGHANISM FOR EXPLOSION MOTORS. APPLICATION FILED DEO.12, 1913.

j. P atented 001;. 13, 1914.

42 fgm MP il 46 mmm;

WIwsses 1 4 y 00V. ifm. E/mdf/j//f/rgj 'Toall 'whom 'it may concern.'

. movement imparted to the operating lever" EmIoND' rmnnr'raz, or NEUILLY-sun-SEINE, FRANCE. l

STARTING HECHANISM FOR EXPISION-MOTORS.

Specicationof Letters'atent.

l Patented Oct. 13,191.4.

vApimmaticn mea necemper 12, 191a.j 'serial no. 805,255. y

Be it known that I, EDMOND Fmnrraz,

a. citizen ofthe French Republic, residingat Neu illysur-Seine, in France have invented a certain new and useful Im rovement in Starting Mechanism for Exp osion- Motors, of which the following is a specification.

This invention ,relates to starting mechanism for explosion motors, chiefly applicable for starting the motors of motor cars, boats, aeroplanes, etc.

The mechanism is essentially characterized by the combination of pawl and ratchet free wheel mechanism mounted on a shaft connected with the shaft of the motor and operated from a distance with mechanism automatically producing the disengagement of the starting mechanism should t e moto;` accidentally turn backward.

The invention also comprises various secondary improvements which will be well understood by referring to the annexed drawings in which Figure 1 is an elevation of a part of motor-car provided with the improved starting mechanism. Fig. 2 is a plan view of Fig. 1. Fig. 3 is a section and Fig. 4 a side view on a larger scale of the part of the mechanism transmitting to .a cable the Figs. 5 and 6 are respectively front and plan views of a guide pulley for the cable and its fixing means. Fig. 7 is an elevation of the interior -of the pawl mechanism arranged at the end of the motor shaft. Fig.

8 is a longitudinal section of Fig. 7. Fig. 9.

is a section ofthe pawl mechanism showing the position of the parts produced'by a re# versal of the motor. Fig. 10 is a section on line a-a of Fig. 8. Fig. 11 is a perspective view of the member which insures the mechanical connection between the engaging and 'disengaging mechanism in case of reversal of the motor. Fig. 12 is a section on line b-b of Fig. 8 and illustrating the clutch mechanism connecting. the shaft of shaft.

The starting mechanism includes: 1. An

operating device arranged on the side bar device arranged 'at the end of the motor the starting mechanism wlth the motorshaft. r4'. An automatic disengaging device in caseof sudden backward action of the motor.

The operatin mechanism arranged on the side bar of t e frame on the driving side comprises an operating lever 1 mounted on the axle 2 and acting by means of toothed sectors 3 and 4 on an arm 5 carried'by an axle 6 at the endof which arm the cable 7 is fastened. The two sectors 3 and 4 are inclosed in a casing 8 fixed by bolts 9 to the side b ar 10. The walls of thiscasing form bearings for the axles 2 and 6, theformer of 'which is extended outside the frame to bring the operating lever clear of thevlatable abutment for the spring 12. The

spring 12 exercises continual traction 'onthe connectingsrod amL tends to displace the lever 1 and the armA5 inthe direction indicated by the arrows A and B (Fig. 3). It is completely compressed when the lever 1 is shifted right forward and expands while adding its force to that exerted by the driver when `the said lever is shifted'back again.

The use of a casing such as 8 provides compactnessof the whole and tightness of l the various members of the operating device. It protects these members, and especially the sectors 3 and 4 from mud and dust and obviates the defects which would result from the vseparate mounting -of each of the members. Abutments 16 are arranged against which the sector 3 abuts in its extreme positions, and which limit the movement which can be imparted to the lever 1 The guide pulley 17 over which the cable passes betweenthe arm 5 and the starting mechanism, is arranged in a casing comprising two cheeks 18 connected by a wall 19. The, cable 7 passes into the casing through a socket 20 which absolutely prevents its leaving the groove of the pulley; and in order to allow the cable to oscillate, the casing is articulated on a pin 21 carried lio by a plate 22 which serves as a support for the pulley, and by means of which it is fixed in position. This plate, which is lixed on the vehicle spring 27 has in its center an elongated slot 23 into which passes a pin 24 arranged on the car axle 28, said pin passing through the springs, the whole being xed by loops 25 andplates 26 which maintain the springs on the axle. The elongating of the slot 23 allows of regulating the position of the plate 22 so that the cable guiding socket 20 is in the plane of oscillation of the latter. The said cable is attached at its other end to a grooved pulley 29 arranged on the mechanism which drives the motor shaft. This pulley is mounted eccentrically about its axis of 'rotation and forms a cam, as will now be explained. The hub of this pulley surrounds a` sleeve 30 which. itJ drives, in the direction of the motors rotatiomby means of a ball clutch 31. The rotation of this sleeve is transmitted by means of a-member 32 to the shaft 33 main- Vtained in extension ofthe motor shaft 34 by a collar 35 fixed to the cross-bar 36 which forms the front brace of the car frame.,

The member 32 surrounding the shaft 33, which it sets in action, also insures its disengagement from the sleeve 30 when a backward movement of the motor drives it backward. This member, the form of which is clearly indicated by Fig. 11, isv composed of -a cylindrical core having a. number of long keys 37 engaged in corresponding grooves of the sleeve 30, the 7effect of whichis to cause the member 32 to assume the rotatory movement of the latter, while allowing it to slide longitudinally with respect to the said sleeve. It has grooves 38 which fit on Shoul- (lers39 carried by the shaft 33 and which, when engaged in them, connect the shaft 33 with the member 32. Thisconnection ceases when the member 32 is moved longitudinally, the' grooves 38 abandoning the shoulders 39. The normal position of the member 32 which is the position of engagement with the shoulders 39,' is insured by a spring 52 which bears-on said member. The member 32 has also on its face turned toward the motor 'two sloping abutments 40 normally engaged with similar abutments 41 carried by a crown 42. This crown is provided with balls 43 forming clutch members in a, cup lvl screwed on the front part of the collar 35. This ball clutch and the thread of the Iscrew which supports the cup 44 allows'the crown 42 -to turn with the shaft 33 in the direction of the normal rotation of the motor, but fix it in the contrary direction and without being possible for it to unscrew the cup 44. 'At rest the shaft 33 is clutched to the shaft 34'of the motor by means of the device shown in Figs. 8 and 12, which comprises balls 45 wedging themselves at rest and at the time of starting between the walls of recesses 46 formed in a sleeve 47 carried bythe motor shaft and .between other recesses 48 formed in asecond sleeve 49 fixed on the shaft The said balls engage in the recesses 46 under the action of the centrifugal force when the motor reaches a certain speed, which unclutches the shaft 33. All this mechanism is protected by a cover 50 screwed on to the hub of the pulley 29 and to which is fixed a ring 51 containing a spiral spring 53, of which one end is fixed to the said ringfwhile the other is fixed to the neck of the fixed cup 44. The function of this spring is to bring back the pulley 29 to its initial position, at the moment of starting, when the lever 1 is pushed forward, and overcomes the action of the spring 12 on the cable 7.

The position of the mechanism at the mo- A ment of the starting of the motor is as shown in Figs. 7 and 8. The traction ofthe cable turns the pulley in the direction of the arrow C (Fig. 7). It is to be observed that by`reason of theeshape of the pulley, the cable begins to act on a smallradius which gradually increases and then diminishes in length. This` allows of giving the pulley 29 a relatively high angular speed at the sta-rt in order that the suction in the motor cylinders may be free; then the progressive increase of the radius allows the `most important part of the compression to be effected without great effort: finally beforeA the end of the compression, the speed of rotation of the sleeve 30 again increases owing to the diminution of the radius of the pulley 29, which facilitates the ignition. l

By its rotatory movement the pulley 29 engages the sleeve 30 which, by means of the member 32 drives the shaft 33 which ,in its turn actuates the motor shaft by means of the ball clutch.' Directly the motor starts and after some rotations, the balls 45 are driven, by the centrifugal force to the bottom of the recesses 46 and the shafts 33 and 34 are uncoupled. The starting mechanism is thus set free and remains in equilibrium by the antagonistic action of the springs 12 and 53.

If the motor accidentally rotates backward, the shaft 33 is rotated in the same direction before the balls 45 have retired from the recesses 46. The movement of the shaft then actuates the member 32, the inclined abutments of which, acting on those of the fixed crown shift the member 32 along the shaft 33 the said member becoming disengaged from the shoulders 39, and becoming free `until the motor stops or until it is engaged by a fresh attempt at starting. In

order that a slight recoil movement -of the -motor may not bring theunclutching mechanism into action, the abutment surfaces of the member 32 and of the crown 42l only take up a small part of the periphery of Cil States isz- A Lin-starting unam th'e'se -members,"so as' only yto come into' -acfl tif'Jne-by.l atreverse movement of certain'importancel What 'I claim ,as my inventioirf and desire -to secure by Letters Patent of the mechanism forexplosion motors,` the combination of a shaft? in axial alinement. with the -motor shaft, a jsleeve surroundingv said shaft, -a pulley eccentrira cally mounted onsaid sleeve, clutch mech-= cord one en anism between said pulle and said 'sleeve, a,

d\of which lsaattached to,.said

' *pulleyand adapted to rotate said'p'ulley tou cause rotation' of said sleeve 4through said clutch mechanism, by traction on sa1d cord,'

means for rotating said shaft by the rotation of 'saidl sleeve, meansallowin rotation of' said shaft in one direction wit out rotating saidsleeve, means .for clutching said shaft to'said motor shaft', and means allowin the release of said last mentioned clutc g means when` the motor has attained acertain Y,speed A 2."In starting mechanism for explosfoir motors,- thecombination-.of a .shaft in-axial I.so

' adapted to exert traction on said cord to4 alinement withthe motor `shaft', 'a"'..sl eye; surrounding .-saidshaft, pulley eccentrically mounted o n said sleeve, clutch mechanism ,between saidpulley and said sleeve, a cord one 'end of which is'attached to said pulley, a lever, means operated by said lever rotate said. pulleyl tocause rotation of said sleeve through said clutch mechanism, means forrotating said shaft by the rotation of said sleeve, means allowing rotation of said shaft in one direction without rotating said I A:so

sleeve, means' for Aclutching said shaft to said motor shaft, and'means allowing the release of said -last mentioned 'clutching means when the motor has attained `a cer- 3. In starting mechanism for explosion motors, fthe combination 'of a shaft in axial alinement with the ,motor shaft, al sleeye surrounding `said shaft, a pulley eccentric'ally mounted on said cleeve, clutch mechanism between said pulley and said sleeve, a a cord one end lof which is attached to' said pulley, a hand'lever, a toothed sector con' nected thereto and operated thereby, a second' lever having its free end connected to the other end of saidcord, a toothed sector connected to said latter lever gearing with the aforesaid sector and operated thereby to swing said latter'lever and cause same to 4exert traction on saidcordto rotate 'said pulley to cause rotation of said sleeve through 'said-clutch mechanism, means for limiting the movement of said hand-lever,l

spring governed means for maintaining said cord stretched, means for rotating said shaft by the rotation of said sleeve, means allowing rotation of'said shaft in one direction fithout rotating. sleeve, means for: 'oltchin @said shaftfto said motor shaft'andA means a owingtlifrelea'seof said last men. Etioned clutching means when 'the :motor has" a'ttained a certain-speed.

f4'.f='In:'starting mechanism .for explosion motors, the". combination' ofv ashaft in 'axial' ialinement with the motor; ..shaft,' a -sleeve Asurrounding said shaft a"'pulley eccentri cally mountedon said s eeve,..clutch mecha :llismlbetween'saidv ulley,- and said-.sleeve, i a cord one'end ofw ich' is .attached .to said i pulley, ian woperatinglever, mechanism for Eexertm'g traction 'on .said cord 'by the roperz Tation of Said `lever-"to rotatesaid pulley to cause rotation of .'said' sleeve ,through :said 1,clutch mechanism-,7a. casing inclosing said- 'Qtraction mechanism, 'means inclosed inl` ,saidl casingfor' maintaining--said cord. stretched,'`av'guide `pulley forsaid cord, a. pivotedcasing inclosing said 4and having-an inlet and outlet or said cord,` .means .f orv attaching saidv latter casing to `vfor Iotating said shaftby the rotation of '.said sleeve, means allowing; rotation'- of` said shaft :in one direction without rotating said sleeve, means for clutching said shaft to said motor shaft, and means allowing the release of said -la'st mentioned clutching means when the motor has `attained a ce1'- tain speed. A

motors, the combination of a shaft in axial alin'ement with the motor shaft, a sleeve trically mounted -on said sleeve, clutch` mechanism between saidpulley 4and said to sald pulley and adapted to rotate said pulley by traction on -said cord so as to initially causev a maximum an and causes similar rotation of said-sleeve 'through said clutch mechanism, means'for rotating said shaft by lthe rotation of said means for' clutching said shaft to saidmovtor shaft, and means allowing Athe .release the motor has attained a certain speed.

6. In starting mechanism for explosion.' motors the combination of a shaft in axial alinement with the motor shaft, a sleeve "provided with vgrooves lsurrounding said shaft, a pulley eccentrically mounted on said s eeve, means for rotating sa1d'jpulley, a ball clutch between said Pulley and said sleeve allowing said sleeve to be rotated in the direction of rotation of the motor by means of said pulley, a movable member comprisinglongitudinal internal grooves,

within said sleeve mounted on said shaft,

the' suspension :spring of a motor car, means 5. In starting mechanism for explosion A surrounding said shaft, a pulley --eccensleeve, a cord one end of which is attached lar speed -of said pulley which progressive ydecreases and then again increases tothe maximum'- sleeve, means allowing rotation of said shaft i in one direction without rotating said sleeve, v

of said last mentioned clutching means when iso lgitudinally on said shaft to become ,A said shaft adapted to engage in the internal grooves of said member when .said member f is in normal position, a spring for holding said member in said position and means operated by reverse rotation of the motor shaft for causing .said member t0 slide lon-` disen gaged from said shaft.

7. In starting mechanism for explosion motors the combination of a shaft in axial alinement with the motor shaft, a sleeve provided `with grooves surrounding said shaft, a pulley eecentrically mounted on said sleeve, means for rotating said pulley, a ball clutch between said pulley and said sleeve allowing saidsleeve tobe rotated in the direction of rotation of the motor by means ois said pulley, -a movable member comprising longitudinal internal ooves, within said sleeve mounted on sai shaft,

a collarsupporting said shaft, keys on said member en aging in the ooves of said sleeve and a lowing it to slie'r y with respect to said sleeve, shoulders on said shaft adapted to engage in the internal grooves of said member when said member is in normal position, a spring for holding said .member in said position, sloping abutments .on said member, a crown, sloping abut- :ments thereon co-acting with the abutments gof said member, withl Slight play, clutch 'mechanism allowing said crown to rotate in longitudinally 4.the direction of rotation of the motoronly -Haneon O. Coxn,

GUILLAUME PIOCHE. 

